Printing-press.



PATENTED AUG. l5, 1905.

W. SCOTT. PRINTING PRESS.

APPLICATION FILED Mmm, 1901.

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PATENTED AUG. L5, 1905.

W. SCOTT.,

PRINTING PRESS.

APPLICATION FILED Amm, 1901.

2 SHEETS-SHEET 2.

ANDREW H Gummi co. Mom-UTHQGRAPNLNS:` WVLSMYNGYIW I. AT

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S PATENT OFFICE,

PRlNTlNG-PHESS..

Specification of Letters Patent,

Patented Aug. 15, 1905.

Original application filed June l5, 1898, Serial No. 683,519. Dividedand this application filed April Z7, 1901. Serial No. 57,739.

To all 'wh/)rit t pari/,y conc/57172,:

Be it known that l', VVAL'rnR SCOTT, a citi- Zen of the United States,and a resident of Plainfield, in the county of Union and State of NewJersey, have invented a certain new and useful Improvement inPrinting-Presses, of which the following is a specification.

The present application is a division of my prior application forLetters Patent of' the United States, filed June 15, 1898, Serial No.683,519, and has for its principal object the better distribution of inkin printing-presses.

The invention consists in features of construction, parts, andcombinations of devices hereinafter described, and more particularlypointed out in the appended claim.

The preferred form of the invention is illustrated in the accompanyingdrawings, forming part of this specification, in which- Figure 1 is acentral vertical longitudinal sectional view of a machine in which theinvention is embodied, parts being' omitted, and .showing` mechanism forreciprocating the type-bed and also mechanism independent of the bed fordriving the inking-rollers. Fig. 2 is a side view of the last-mentionedmechanism on a scale larger than that employed in Fig. 1. Fig. 3 is adetail of the last-mentioned mechanism. Fig. f1 is a plan of themechanism shown in Fig. 1. Fig. isa crosssection of rolling gears andracks for driving the bed and also shows other parts.

Like reference characters will be used to designate the same part in thedrawings.

Part only of the framework A of the machine is shown in the drawings.

B designates a type-bed of any usual or convenient form or construction,and 1 suitable ways or guides (two only being shown) upon which the bedB moves to and fro.

2 designates rack bars connected to or vformed integrally with the bedBat the under side thereof, said rack-bars extending longitudinally of'the bed.

3 is an ink table or plate at one end of the bed B, and 4L is a form onthe bed B.

The bed B is moved to and fro by the rolling gears 5, which mesh withracks 2 on the bed and with racks 6, which are fixed to the stationaryframe A. The gears are mounted upon a shaft 7, which is carried by ahead 8. By preference the gears 5 are fast to the shaft, and the shaftis journaled in the head. r1`he shaft 7 is parallel with the plane ofthe bed B, and the head 8 has a shaft 9 secured in a vertical bearingtherein.

also has a slot extending all the way across it and beyond the shaft 9,and a connecting-rod 10 passes into said slot and has an eye 11 at theend thereof, by means of which it engages with the shaft 9. The rod 10,at its other end, is provided with a boX 12 for connecting it with anupright stud 13, which is journaled, preferably, in a bearing 14 on aplanet-gear 15. The gear 15 is journaled on a stud 16, which is suitablysecured in a bearingformed with or borne by a carrier-gear 17, shown asa bevelgear. upon an upright stud 18, which is secured to the bottom ofthe casing 19, which in turn is secured to the framework A. The casing19 is circular in plan, and its walls are fiared outwardly at 20 toprovide a raceway or track upon which the teeth of the gear 17 may runand by which they maybe supported in part. The casing 19 is offset atthe level of the gear or slightly thereabove and again rises above saidoffset portion, as shown. An internal gear 21 rests upon this offsetportion and is made fast to the easing in any suitable manner. Slightlyabove the top of the gear 21 is the top of an external flange on thecasing 19, and an externally-flanged bearing-ring 22 is jogged down overthe said external flange of the casing 19 and is made fast thereto. Thegear 15 has an internally-flanged ring 23 secured to its top, theexternal diameter of the ring 23 being equal to the diameter of thepitch-circle of the gear 15, while the internal diameter of the ring 2Qis equal to the diameter of the pitch-circle of the gear 21.

24 designates bearing disks or wheels journaled on studs on the gear 17and coacting with each other and with. .the rings 22 and 23.

The bevel-gear 17 is driven at opposite sides by bevel-gears 25, fast onshafts 26, which are geared together by pinions 27 and shaft 28 and anintermediate pinion Q9 on a short shaft. The casing 19 is cut away orrecessed in order to allow the gears and their shafts free passage androom for motion.

The points of the teeth of the gears 5 are prevented from running on thebottoms of the kerfs of the racks 6 by means of disks or wheels 31,which are secured upon the hubs of said gears and turn therewith, and bythe tracks or ways 32, which are parallel with and alongside of theracks 6, the diameters of the disks 31 being equal to that of thepitchcircles of the gears 5, preferably. The said tracks 3Q may beintegral with or may be attached to the frame A.

The mitergear 17 turns The form 4 on the bedB may be lithographie,let-ter-press, or other and is inked by means of rollers I, with whichthe endwisemovable or vibratory rolls F coact. The rolls I receive inkfrom the table 3, which in turn receives ink from distributing-rolls D.Endwise-movable or vibratory rolls G coact with the 4rolls D in thespreading of the ink evenly. Ink may be supplied to the table and therolls F G may be moved to vand fro endwise in any suitable or knownmanner. (Not shown.) The ink may be conveyed in any known manner from afountain (not shown) to the table 3, and the rolls D cause itsdistribution thereon as usual. During the forward or printing strokes ofthe bed B the table 3 passes under and in contact with both sets ofrolls I, the cylinder being lifted after the impression is taken andbefore the table 3 reaches it by any suitable means, as in said priorapplication or as in my Letters Patent of the United States, dated April15, 1890, and numbered 425,710. The rollsI take ink from the table 3 andlay it on the form on the bed as the bed moves in each direction, eachrolier I coaeting with all parts of the form. By arranging rolls Ibehind the impression-cylinder Cwthat is, at its left in Fig. 1#morerolls can be used to coact with all parts of the form than can be placedin front of the said cylinder, whereby a more uniform and better inkingof the form is secured. In case water-rolls replace thel rolls I behindthe cylinder C contact between said waterrolls and the ink-table may beprevented in the manner illustrated in my Letters Patent of the UnitedStates, No. 505,961, and bearing date the 3d day of October, 1393.

The rolls F G are oscillated independently of the bed B, preferably bythe following means: A channeled guide-bar 33 is fixed to the frame Aadjacent to and parallel with the path of the gears 5. A rack-bar 34lies in the guide 33 and is moved to and fro endwise by means of aconnection with the beddriving mechanism, as an arm 35, provided with aneye 36, fitting over the hub of an adjacent gear 5, whereby the rack 34moves to and fro in unison with the back-and-forth motion of thebed-driving gears 5. The motion of the rack-bar 34 is transmitted to andoscillates the rolls F G, and these rolls F G in turn drive the rolls Iand D correspondingly. The means whereby said rack-bar 34 so drives therolls D I F G (shown in the drawings) comprises a shaft 37, which isjournaled in the frame A and extends near to and over the rack-bar 34,where it is provided with a pinion 38, which meshes with the rack 34,the bar or guide 33 being recessed for the purpose of allowing saidpinion to mesh with the bar 34. A gear 39 at the other end of the shaft37 is geared with the rolls F by gears 40 and with the rolls G by gears41, some of which are journaled on the frame A and the .remainder ofwhich are fast on the shafts of the rolls F G. The gears 41, which arefast on the roll-shafts, are splined thereto or are otherwise soarranged as that said rolls F G may be moved to and fro endwise withoutever becoming disconnected from the shaft 37.

rIhe ink is spread upon the table 3 by the rollsD and is transferred bythe table or plate to the rollers I in front of and behind theimpression-cylinder C, and these rollers I transfer the ink to the formon the bed B. The rolls I and D are driven by the rolls F G (byfrictional contact) independently of the bed and form, and, in so far asthese rolls D F G I are concerned` the rack-bar 34 is the prime mover.In this manner the bed B is relieved of the duty of rotating the saidrolls, and these rolls are oscillated in unison with the reciprocationsof the bed or are reversed in their motion of rotation as the bedreverses its direction of motion.

I do not limit myself to the precise form of my invention shown in thedrawings and above described, `since the invention may be embodied inother forms without departing from the spirit thereof.

IVhat I claim as new, and desire to secure by Letters Patent of theUnited States, is-

In a flat-bed printing-press, the lcombination with animpression-cylinder, of a reciprocating bed, an ink-table at the frontend thereof, means in front of said cylinder for distributing ink onsaid table, and ink-rolls in front of and behind said cylinder forcoacting with the form and said table supplying ink to all said rolls.

Signed at New York city, in the county of New York and State of NewYork, this 25th day of April, A. D. 1901.

`WALTER SCOTT. `Witnesses:

EDWARD YV. NoRRIs, R. IV. BARKLEY.

